Xylem ________.

a. is a vessel that carries water in plants
b. is a partial division between fungal cells
c. is found in nonvascular plants
d. makes spores in fungi


Ans: a. is a vessel that carries water in plants

Biology & Microbiology

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What is the correct order for the following events that follow a nerve impulse along a sympathetic neuron to innervate

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e. 2, 3, 4, 1, 6, 5

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The California populations of the Northern elephant seal are descendants from a very small population of seals that was overhunted in the 1890s. Heterozygosity in this population would be expected to be ________ due to ________.

A. great; a bottleneck effect B. slight; a bottleneck effect C. great; assortive mating D. slight; the founder effect E. great; disruptive selection

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Birds and fishes overcome gravitational forces primarily through their ________.

A. body shape and density B. lubricating secretions C. smooth outer covering D. textured surface E. reduced surface area in contact with the ground

Biology & Microbiology

A plant's first line of defense against infection is

A) cell elongation. B) its epidermis. C) phytochrome. D) salicylic acid.

Biology & Microbiology